Taiko Fee Mechanism

$$F_E(t) = \max\left(\mu \times C_{L1}(t) + \nu \times \frac{D(t)}{H}, F_{\text{min}}\right)$$

Performance Metrics

Average Taiko Estimated Fee per Gas
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gwei
Taiko Estimated Fee Variability
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CV
Time Underfunded
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%
L1 Tracking Error
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ratio

Metric Interpretation

Average Taiko Estimated Fee per Gas: Mean gas cost over simulation period. Lower values reduce user burden but must cover L1 operational costs. Comparable to L1 basefee.
Taiko Estimated Fee Variability (CV): Coefficient of variation measuring fee stability. Excellent: <0.5, Good: 0.5-1.0, Poor: >1.0
Time Underfunded: Percentage of simulation time with vault deficit > 0.01% of target balance. Excellent: <5%, Good: 5-15%, Poor: >15%
L1 Tracking Error: Deviation between fees and actual L1 costs (normalized standard deviation). Excellent: <0.3, Good: 0.3-0.6, Poor: >0.6

L1 Cost Estimation Analysis

Trend vs Spot L1 Basefee: Shows how the smoothed trend basefee (used for L2 fee calculation) compares to actual spot L1 basefee. The trend approach reduces fee volatility while maintaining cost coverage. When μ=0, this chart shows the underlying L1 dynamics without affecting L2 fees.